UI redesign incomplete stage
Many important changes in the behavior of the application.
Message error state will not be owerwritten by new outgoing message
Mandarin Theme added as module dependency
Fixed action mode theme background
Small, but important history copying fix
Almost new chat dialogs switch mechanism in ChatActivity; optimized data usage in message sending methods; history clearing functionality; updated v4 support lib
Merge branch 'ui-redesign' of https://github.com/solkin/mandarin-android into vk-implementation